Thursday, March 25, 2010

Weakening El Niño's Last Punch

Recent ocean satellite imagery continues to indicate a weakening El Niño, but one last punch by the warm Pacific-driven weather phenomenon is likely to impact our weather in coming weeks and months.

According to sea-level height and temperature data, another strong, eastward-moving wave of warm water, known as a
Kelvin wave, is heading towards the United States west coast.

Now in the central and eastern equatorial Pacific, this Kelvin wave is not expected to impact global weather events as the full-fledged El Niño has for the better part of the past year, but this could be the
last hurrah before El Niño's dry sibling, La Niña, takes over.